typo fix in readme

typo fix in readme

Author: zschuessler

readme.md

@@ -29,7 +29,7 @@ composer require zschuessler/laravel-route-to-class
 
 > If you do run the package on Laravel 5.5+, you can start using the package at this point. [package auto-discovery](https://medium.com/@taylorotwell/package-auto-discovery-in-laravel-5-5-ea9e3ab20518) takes care of the magic of adding the service provider.
 
-** Add the service provider to your app configuration **
+**Add the service provider to your app configuration**
 
 If you do not run Laravel 5.5 (or higher), then add the following line under the `providers` array key in *app/config.php*: